| abstract |
(57) 【Abstract】 PROBLEM TO BE SOLVED: To have a strong affinity for melatoninergic receptors, which is useful for treatment of seasonal depression, sleep disorders, etc. Provided are a novel alkylated (hetero) cyclic compound, a method for producing the same, and a pharmaceutical composition containing the same. SOLUTION: Formula (I): [Wherein R 1 represents alkyl or the like, A forms a substituted or unsubstituted benzofuran or 2,3-dihydrobenzofuran group together with the benzene ring to which it is bonded, and R 2 represents , Hydrogen or alkyl, and R 3 represents acyl or thioacyl, or substituted or unsubstituted carbamoyl or thiocarbamoyl] A compound represented by and its enantiomers and diastereomers, a method for producing the same, and a pharmaceutical composition containing the same. |